import { createStore, applyMiddleware ,  compose } from 'redux';
import thunk from 'redux-thunk';
import reducer from './reducer';

const composeEnhancers =
typeof window === 'object' &&
window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__ ?
window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__({
// Specify extension’s options like name, actionsBlacklist, actionsCreators, serialize...
}) : compose;

const enhancer = composeEnhancers(
applyMiddleware(thunk), //注意，这里的thunk不是数组
// other store enhancers if any
);
const store = createStore(
reducer,
enhancer
);
export default store;